
/**
 * Copyright 2009 cestum.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package org.waveprotocol.wave.model.util.codePoint {
import org.waveprotocol.wave.model.document.operation.automaton.enums.PermittedCharacters;
import org.waveprotocol.wave.model.util.CodePointHandler;
import org.waveprotocol.wave.model.util.StringBuilder;
import org.waveprotocol.wave.model.util.Utf16Util;

public class AnyText implements CodePointHandler {
	
	var parent:PermittedCharacters;
	var result:StringBuilder;
	public function AnyText(d:PermittedCharacters, b:StringBuilder) {
		this.parent = d;
		this.result = b;
	}
	public function codePoint(cp:String):Object {
		if (Utf16Util.isSupplementaryCodePoint(cp)) {
			result.append(Utf16Util.REPLACEMENT_CHARACTER);
		} else if (Utf16Util.isCodePointValid(cp)) {
			org.waveprotocol.wave.model.util.Assert.assert(0<= cp.charCodeAt(0) && cp.charCodeAt(0) <= 0xFFFF);
			result.append(cp.charAt(0));
		} else {
			result.append(Utf16Util.REPLACEMENT_CHARACTER);
		}
		return null;
	}
	
	
	public function unpairedSurrogate(c:String):Object {
		result.append(Utf16Util.REPLACEMENT_CHARACTER);
		return null;
	}
	
	
	public function endOfString():Object {
		return null;
	}
	
}
}